Home / 20,937.81-28,864.29-14,967.30

Finding the Fourth Proportional to 20,937.81, 28,864.29 and 14,967.30

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Solution

The fourth proportional to 20,937.81, 28,864.29 and 14,967.30 is: 20,633.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.81 : 28,864.29 = 14,967.30 : x
  2. Step 2: Convert to fraction form
    20,937.81/28,864.29 = 14,967.30/x
  3. Step 3: Cross multiply
    20,937.81x = 28,864.29 × 14,967.30
  4. Step 4: Simplify right side
    20,937.81x = 432,020,487.72
  5. Step 5: Solve for x
    x = 432,020,487.72/20,937.81
  6. Step 6: Final answer
    x = 20,633.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.